Agricultural machine



Feb. 24, 1931 i v OLSON 1,793,746

AGRIQULTURAL MACHINE I Filed Oct. 18, 1929 3 Sheets-Sheet s nIIr-rInventor A itomey Patented Feb. 24, 1931 UNITED STATES PATENT OFFICEOIJOF OLSON, 02E KINGSIBURG, CALIFORNIA AGRICULTURAL MACHINE Applicationfiled October 18, 1929.. Serial 110,400,670.

This invention relates to an improved agrifrom whicharotary axle 9 issuspended. This cultural apparatus or machine which is exis arranged inappropriate suspension bearpressly constructed for severing and turningings and carries a plurality of longitudinally under the ground tree andvine prunings, spaced ground engaging discs 9. These are cover crops,trash, and the like. of concavo-convex relationship with their Morespecifically stated, I have evolved and concaved sides disposed towardthe left. produced a novel portable machine which is The end bars of theframe are provided characterized by a pair of complemental uni' withforward extensions 10 and 11, the first tary disc assemblies havingappropriate draft named of which is offset laterally and down- 10 means,andmeans for adjustably connecting ward to accommodate the draft bars 12and 60 these assemblies or units together in order 13 respectively.These draft bars are comthat they may be disposed in variable anguposedof complemental angle irons. For inlar relationships with respect toeach other stance the angle irons of the part 12 are to accomplish theseveringand turning under designated by the reference characters 14 and15 action desirable in a machine of this form. 15 and disposed inoverlapping adjustable 65 Briefly stated, I have found it to bepraerelationship. These are somewhat shorter ticable in the developmentof an apparatus of than the companion bars 16 and 17 of the comthis kindto provide a pair of especially de- 'plemental parts 13. signedsupporting frames' with means for It will be observed that the angleiron 16 pivotally and adjustably connecting these has its forward endextended in apertures as 7 frames together, each frame constituting 51indicated at 18 to permit the draft appliance carrier or mounting for agang of rotatably (not shown) to be connected thereto and to mountedconcavo-convex ground engaging permit the line of draft to be regulatedto discs. vary the line of travel of the discs 9. In other Theparticular structural elements and words, these discs may be caused totravel 75 their specific association and cooperation will diagonally ofthe row, in direct longitudinal become more readily apparent from thefolalinement with the row, or at varying angulowing description anddrawings. lar relationships.

Inthe drawings: The reference character 19 designates the Figure 1 is atop plan view of the complete brace which is directed upwardly as seenin 80 machine showing the disc units or assembly Figure 3 and connectedto the upper endporin longitudinal relationship. tion of a post 20.Carried by this post is an Figure2isasimi1ar view showing the unitsoperating lever 21 for a p1n1on or gear 22 adjusted into somewhatabreast angular rewhich is fixedly mounted on the low end porlationshipwith the inner ends disposed in tion of the shaft and adjacent theframe. b5 close spaced proximity to each other. This lever includes ahandle 23 and a fork Figure 3 is a side elevational view of the 24 whosearms straddle the upper end porstructure seen in Figure 1 observing itin a tion of the post and are plvotally connected direction from left toright. thereto as at 25.

Figure 4 is an enlarged detail view of the The adjacent end portion ofthe brace 19 90 adjusting pinion and rack bar arrangement. is somewhatresilient and constitutes a re- Figure 5 is a perspective view of one ofthe tainer for the pivoted end of the lever. The details. I lever isadjustable from a hor zontal pos t on I The general construction maywell be seen to any point between said horizontal position in Figure 1wherein it will be observed that and the vertical dotted line positionrepre- "5 one disc gang assembly or unit is denoted by sented in Figure3. This permits the lever the reference character 6 and the companion tobe conveniently grasped by the operator unit by the reference character7. I and to be manipulated for turning the .shaft The unit 6 is providedwith substantially 20 and the gear 22 thereon.

rectangular supporting frame structures 8 Disposed on theframeworkalongside of 10'.

the gear is a guide roller 26 as seen in Figure l and a rack bar isassociated with this, the rack bar being designated at 27 and beingmounted on an arm 28 which bears slidably against the roller and therebyholds the rack teeth in engagement with the gear teeth. The referencecharacter 29 designates a spring which cooperates with the pivoted endof the lever for aiding it in holding it in various adjusted positions.

I also call attention to a retaining bar 30 having a plurality of keeperpins 31 thereon over which the forked end portion of the lever may beengaged to hold the lever against undue movement.

I next call attention to the fact that the right hand end bar of theframe 8 is provided with a rear extension 32 by means of which the frame6 is connected with the companion frame 7. The latter frame 7 has itscorresponding end bar formed with a laterally oifset apertured attachingear 33. The front bar of the frame is actually made up of two sections34 and 35 disposed in overlapping relationship and adjustablyconnected'together by a bolt.

The adjacent end of the aforesaid arm 28 is adjustably connected withthe sections 34 and 35 to join the respective devices or units 6 and 7together, and to permit the angularity thereof to be varied from theposition shown in Figure 1 to the position shown in Figure 2.

The reference character 36 designates the shaft on which thecomplemental discs 37 are mounted. These discs 37 are also concavoconvexin configuration and have their concaved sides opening in the directionopposite to the corresponding sides of the first named discs 9.

It will thus be seen that through the medium of the extensible draftmeans 12 and o 13, and the extensible bar sections-34 and 35,

the two separate disc gang devices 6 and 7 may be adjustably connectedtogether for cooperation with each other at varying angles. Then too,the adjustment may be readily affected and varied from time to timethrough the medium of the lever actuated pinion and rack structure.

In Figure 1 the-arrangement constitutes double discs, a structure whichis especially useful for turning under tree and vine prunings, whereasin'Figure 2 the arrangement is converted into a wide single discarrangement leaving nountouched strip through the center because of thecooperation of the innermost discs 9 and 37 respectively.

The only change that is necessary in the Figure 2 arrangement is toextend the complementalbar sections 34 and 35 and to also extend the anle bar members of the devices 12 and 13 in t e draft appliance.

It is thought that by considerin the description in connection with therawings,

a clear understanding of the construction, operation and features andadvantages of the invention will be had. Therefore, a more lengthydescription is regarded unnecessary.

Minor changes in shape, size and rearrangement of details comin withinthe field of invent-ion claimed may be resorted to in actual practice ifdesired.

I claim:

1. In an agricultural machine of the class described, a horizontalsupporting frame, an axle suspended beneath said frame, a gang ofconcavo-convex discs mounted on said axle for rotation therewith, asecond frame provided with an axle and a plurality of individualconcavo-convex discs mounted thereon faced in opposition to the firstnamed discs, means for pivotally and adjustably connecting said framestogether, manually'adjusted means for regulating and varying theangularity of the frames to permit the frames to and following frames,and extensible angle irons adjustably connected rtogetherto form anadjustable draft appliance adapted to be connected selectively with thesaid frames.

2. In an agricultural apparatus of the class described, a horizontalframe of general rec tangular form, an axlesuspended centrally beneathsaid frame and mounted for rotation in bearings carried by the frame, aplurality of longitudinally spaced concavo-convex ground engaging discsmounted for-rotation on said axle, a vertical shaft rising from andmounted for rotation on said frame, a-pinion carried b said shaft, anoperating lever for said sha t, a rack bar slidably mounted on saidframe and having its teeth engageable with the, teeth of said pinion, asecond rectangular frame, an axle on said second frame, a series ofseparate discs carried by said second named axle, means for adjustablyand pivotally connectingsaid frames together,

